Can anyone help me? pls...?

hi,i got 96% in pcm and i want to study aeronautical eng ,but everyone( inc my family) are discouraging me, they say that there is no job assurence in aero field but it was my aim frm childhood because i wanted to become a space scientist. my parents are advicing me to study BE ECE through tnea 2011 iam totally confused pls..... help me